Unify boot.scr generation so Makefile for device image generation won't
grow without a reason. Also make boot-scr step optional.
Signed-off-by: Tomasz Maciej Nowak <tomek_n@o2.pl>
U-Boot already knows where it found the boot.scr, and
figuring out the partition UUID becomes trivial at this point.
This change allows booting OpenWrt from whatever storage it has been
flashed to: SD card, eMMC, USB disk or SATA disk.
Signed-off-by: Josua Mayer <josua.mayer97@gmail.com>
[replace lede with openwrt, redact commit message]
Signed-off-by: Tomasz Maciej Nowak <tomek_n@o2.pl>
U-Boot provides standard variables for load addresses, and
filesystem-agnostic load-commands. Furthermore thanks to distro-boot,
the device and partition from which the system boots is known.
The new boot-script makes use of all this information.
Tested on the only board that uses this boot-script: Clearfog Pro
Signed-off-by: Josua Mayer <josua.mayer97@gmail.com>